Isobutylene/Isoprene Copolymer

INCI: ISOBUTYLENE/ISOPRENE COPOLYMER

CAS Number
9010-85-9 [^1_8]
Function
Viscosity controlling
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” also FDA GRAS for food contact (21 CFR 172.615, 175.105, etc.)

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Isoprene monomer (CAS 78-79-5) is a restricted substance in Canada; residual isoprene monomer content must be controlled. Butyl rubber โ€” ensure food/cosmetic grade specification

โš ๏ธ
Concern Level: Low

Frequently Asked Questions

Is Isobutylene/Isoprene Copolymer safe in cosmetics?

Isoprene monomer (CAS 78-79-5) is a restricted substance in Canada; residual isoprene monomer content must be controlled. Butyl rubber โ€” ensure food/cosmetic grade specification The EU classifies Isobutylene/Isoprene Copolymer as "permitted". Safety rating: GOOD.

Is Isobutylene/Isoprene Copolymer allowed in the EU?

Isobutylene/Isoprene Copolymer EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Isobutylene/Isoprene Copolymer do in cosmetics?

Isobutylene/Isoprene Copolymer functions as: Viscosity controlling. It is classified as a cosmetic ingredient in our database. CAS number: 9010-85-9 [^1_8].

What is the Margin of Safety for Isobutylene/Isoprene Copolymer?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

๐Ÿ“ฑ

Is Isobutylene/Isoprene Copolymer in Your Products?

Scan any product label with Piro โ€” our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.

Try Piro Free โ†’

Analyze Your Full Ingredient List

Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Isobutylene/Isoprene Copolymer in your formulation.